Allergic vasculitis
			Alternative names:
			vasculitis; vasculitis - allergic; vasculitis - hypersensitivity
			
			 Definition:
			A skin disorder with inflammation and damage to blood vessels of the skin, caused by hypersensitivity to a drug or foreign agent (see also necrotizing vasculitis).
			
			 Causes, incidence, and risk factors:
			Vasculitis occurs because of inflammation and damage to blood vessels. The inflammation of allergic vasculitis is the result of an allergic reaction to a drug or other foreign agent.
			
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